User blog comment:BlueGames8315/Ideas for the Elite 4 typings/@comment-34472257-20180304031653/@comment-32736638-20180305004055

There is a possibility the Elite 4 may have mixed types. This has been seen in both gen 1 and 2.

Gen 1: Lorelei: Ice and Water Bruno: Rock and Fighting Agatha: Poison and Ghost Lance: Dragon and Flying.

Gen 2:

Will: Psychic and Grass Koga: Poison and Bug Bruno: Rock and Fighting Karen: Ghost and Dark